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#include "crossbar_generator.h"
#include <stdio.h>
static int validate_config(const Crossbar_Config *config)
{
if (!config || config->rows == 0 || config->columns == 0 ||
!config->input_series || config->num_samples == 0 ||
!config->initial_resistance || !config->model_path ||
!config->subcircuit_name || config->load_resistance <= 0.0 ||
config->time_step <= 0.0 || config->stop_time <= 0.0 ||
(config->print_state_nodes != 0 &&
config->print_state_nodes != 1)) {
return -1;
}
return 0;
}
static int write_header(FILE *file, const Crossbar_Config *config)
{
if (fprintf(file,
"* Generating a crossbar with:\n"
"*Rows: %zu\n"
"*Columns: %zu\n",
config->rows, config->columns) < 0) {
fprintf(stderr, "Failed to write crossbar header\n");
return -1;
}
if (fprintf(file, "\n.include \"%s\"\n", config->model_path) < 0) {
fprintf(stderr, "Failed to write model include\n");
return -1;
}
return 0;
}
static int write_input_series(FILE *file, const Crossbar_Config *config)
{
if (fprintf(file, "\n* SPIRES reservoir states\n") < 0) {
return -1;
}
for (size_t row = 0; row < config->rows; row++) {
if (fprintf(file, "VROW%zu row%zu 0 PWL(", row, row) < 0) {
return -1;
}
for (size_t sample = 0; sample < config->num_samples;
sample++) {
double time = sample * config->time_step;
double voltage =
config->input_series[sample * config->rows + row];
if (fprintf(file, "%.17g %.17g ", time, voltage) < 0) {
return -1;
}
}
if (fprintf(file, ")\n") < 0) {
return -1;
}
}
return 0;
}
static int write_external_inputs(FILE *file, const Crossbar_Config *config)
{
if (fprintf(file, "\n* Online SPIRES reservoir states\n") < 0) {
return -1;
}
for (size_t row = 0; row < config->rows; row++) {
if (fprintf(file, "VROW%zu row%zu 0 dc 0 external\n", row,
row) < 0) {
return -1;
}
}
return 0;
}
static int write_memristor_array(FILE *file, const Crossbar_Config *config)
{
if (fprintf(file, "\n* Memristor Array\n") < 0) {
fprintf(stderr, "Failed to write memristor array header\n");
return -1;
}
for (size_t row = 0; row < config->rows; row++) {
for (size_t column = 0; column < config->columns; column++) {
if (fprintf(file,
"X%zu%zu row%zu col%zu %s"
" PARAMS: Rinit=%.12g\n",
row, column, row, column,
config->subcircuit_name,
config->initial_resistance
[row * config->columns + column]) < 0) {
fprintf(stderr,
"Failed to write memristor array\n");
return -1;
}
}
}
return 0;
}
static int write_column_loads(FILE *file, const Crossbar_Config *config)
{
if (fprintf(file, "\n* Column Loads\n") < 0) {
fprintf(stderr, "Failed to write column-load header\n");
return -1;
}
for (size_t column = 0; column < config->columns; column++) {
if (fprintf(file, "RLOAD%zu col%zu 0 %.0f\n", column, column,
config->load_resistance) < 0) {
fprintf(stderr, "Failed to write column loads\n");
return -1;
}
}
return 0;
}
static int write_simulation(FILE *file, const Crossbar_Config *config)
{
if (fprintf(file, "\n* Simulation\n") < 0) {
fprintf(stderr, "Failed to write simulation header\n");
return -1;
}
if (fprintf(file, ".tran %.17g %.17g uic\n.control\nrun\n",
config->time_step, config->stop_time) < 0) {
fprintf(stderr, "Failed to write simulation command\n");
return -1;
}
return 0;
}
static int write_save_data(FILE *file, const Crossbar_Config *config)
{
if (fprintf(file, "linearize") < 0) {
return -1;
}
for (size_t column = 0; column < config->columns; column++) {
if (fprintf(file, " v(col%zu)", column) < 0) {
fprintf(stderr,
"Failed to write linearize statement\n");
return -1;
}
}
if (fprintf(file, "\nwrdata output/crossbar_output.dat") < 0) {
return -1;
}
for (size_t column = 0; column < config->columns; column++) {
if (fprintf(file, " v(col%zu)", column) < 0) {
fprintf(stderr,
"Failed to write output-data statement\n");
return -1;
}
}
if (fprintf(file, "\n.endc\n.end") < 0) {
fprintf(stderr, "Failed to write closing statements\n");
return -1;
}
return 0;
}
int generate_crossbar(const char *output_filename,
const Crossbar_Config *config)
{
if (!output_filename || validate_config(config) < 0) {
fprintf(stderr, "Invalid crossbar configuration\n");
return -1;
}
FILE *file = fopen(output_filename, "w");
if (file == NULL) {
fprintf(stderr, "Could not create crossbar netlist\n");
return -1;
}
if (write_header(file, config) != 0 ||
write_input_series(file, config) != 0 ||
write_memristor_array(file, config) != 0 ||
write_column_loads(file, config) != 0 ||
write_simulation(file, config) != 0 ||
write_save_data(file, config) != 0) {
fclose(file);
return -1;
}
if (fclose(file) != 0) {
fprintf(stderr, "Failed to close crossbar netlist\n");
return -1;
}
return 0;
}
int generate_online_crossbar(const char *output_filename,
const Crossbar_Config *config)
{
if (!output_filename || validate_config(config) < 0) {
fprintf(stderr, "Invalid online crossbar configuration\n");
return -1;
}
FILE *file = fopen(output_filename, "w");
if (file == NULL) {
fprintf(stderr, "Could not create online crossbar netlist\n");
return -1;
}
if (write_header(file, config) != 0 ||
write_external_inputs(file, config) != 0 ||
write_memristor_array(file, config) != 0 ||
write_column_loads(file, config) != 0 ||
fprintf(file, "\n* Online simulation\n.tran %.17g %.17g uic\n",
config->time_step, config->stop_time) < 0 ||
fprintf(file, ".save time") < 0) {
fclose(file);
return -1;
}
for (size_t column = 0; column < config->columns; column++) {
if (fprintf(file, " v(col%zu)", column) < 0) {
fclose(file);
return -1;
}
}
if (fprintf(file, "\n.end\n") < 0 || fclose(file) != 0) {
return -1;
}
return 0;
}
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